And Powerful

Werkzeug started as a simple collection of various utilities for WSGI
applications and has become one of the most advanced WSGI utility modules.
It includes a powerful debugger, fully featured request and response
objects, HTTP utilities to handle entity tags, cache control headers, HTTP
dates, cookie handling, file uploads, a powerful URL routing system and a
bunch of community contributed addon modules.

It does Unicode and doesn't enforce a specific template engine, database
adapter or anything else. It doesn't even enforce a specific way of
handling requests and leaves all that up to the developer.

In the Box

HTTP header parsing and dumping

Easy to use request and response objects

Interactive JavaScript based in-browser debugger

100% WSGI 1.0 compatible

Supports Python 2.6, 2.7 and 3.3.

Unicode support

Basic session and signed cookie support

URI and IRI utilities with unicode awareness

builtin library of fixes for buggy WSGI servers and browsers

integrated routing system for matching URLs to endpoints and vice
versa

A Strong Foundation

Werkzeug is the base of frameworks such as Flask and more, as well as
in house frameworks developed for commercial products and websites.

What other people say

Have you looked at werkzeug.routing? It's hard to find anything that's
simpler, more self-contained, or purer-WSGI than Werkzeug, in general
— I'm quite a fan of it! — Alex Martelli

Contribute

Found a bug? Have a good idea for improving Werkzeug? Head over to
Werkzeug's new github page and
create a new ticket or fork. If you just want to chat with fellow
developers, visit the IRC channel or join the
mailinglist.